Biology:Amphistium
Amphistium paradoxum (from Greek: ἀμφί amphi, 'on both sides', Greek: ιστίον istion 'sail', and Greek: παράδοξος paradoxus 'extraordinary'),[1] the only species classified under the genus Amphistium and the family Amphistiidae, is a fossil fish which has been identified as a Paleogene relative of the flatfish, and as a transitional fossil.[2] In a typical modern flatfish, the head is asymmetric with both eyes on one side of the head. In Amphistium, the transition from the typical symmetric head of a vertebrate is incomplete, with one eye placed near the top of the head.[3]
Amphistium is among the many fossil fish species known from the Monte Bolca Lagerstätte of Ypresian Italy. Heteronectes is a related, and very similar fossil from a slightly earlier strata of France. Heteronectes is sometimes also placed in the family Amphistiidae, though other studies find it to be more basal than any other flatfish taxon.[4][5]
References
- ↑ Roberts, George (1839) (in English). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. pp. 7, 145. https://archive.org/details/anetymologicala00robegoog. Retrieved 29 December 2021.
- ↑ "Odd Fish Find Contradicts Intelligent-Design Argument". National Geographic. July 9, 2008. http://news.nationalgeographic.com/news/2008/07/080709-evolution-fish.html.
- ↑ Matt Friedman (2008-07-10). "The evolutionary origin of flatfish asymmetry". Nature 454 (7201): 209–212. doi:10.1038/nature07108. PMID 18615083. Bibcode: 2008Natur.454..209F.
- ↑ Friedman, Matt (2012). "Osteology of † Heteronectes chaneti (Acanthomorpha, Pleuronectiformes), an Eocene stem flatfish, with a discussion of flatfish sister-group relationships" (in en). Journal of Vertebrate Paleontology 32 (4): 735–756. doi:10.1080/02724634.2012.661352. ISSN 0272-4634. Bibcode: 2012JVPal..32..735F. https://www.tandfonline.com/doi/full/10.1080/02724634.2012.661352.
- ↑ Near, Thomas J; Thacker, Christine E (18 April 2024). "Phylogenetic classification of living and fossil ray-finned fishes (Actinopterygii)". Bulletin of the Peabody Museum of Natural History 65: 101. doi:10.3374/014.065.0101. Bibcode: 2024BPMNH..65..101N.
Wikidata ☰ Q474958 entry
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